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TIRE KNOWLEDGE NOTES


  4-3 4-3) Proper selection of replacement tire
 
(1) Tire size selection		  
  Always refer to the vehicle owner's manual and vehicle's tire information placard located on the glove box door, door edge, or door post for the correct tire size and inflation pressure.
Replacement tires should be selected with the same size designation as shown in the manual.
 
   
(2) Conformity
    Since replacement tires may influence vehicle handling and stability therefore;  
    (a) It is recommended that all four tires have the same size, load capacity, speed rating and construction.  
    (b) Do not mix different tire size designations and/or constructions on the same axle, except for the limited use of a temporary type spare tire.  
    (c) Check tire/vehicle clearance for replacement tires and/or rims of a different size designation, particularly front tires in full left and right turn.  
     
  4-4 4-4) Tire rotation
 
The introduction of many front wheel drive cars and modern tire tread patterns incorporating individual pattern blocks has increased the need for tire rotation.
An appropriate rotation can maximize overall tread life, and can even out front and rear wear patterns. Because the front tires on front wheel drive cars must transmit the drive torque as well as forces to steer and brake the car, it is natural that on most cars they wear two or three times as fast as the free-rolling rear tires.
Experience has shown that the rear tires on front wheel drive vehicles are susceptible to uneven wear which may cause increased tire noise and vibration.

Always consult the owner's manual before considering tire rotation because some owner's manuals may not recommend to change the tire positions in order to maintain optimum vehicle handling

Tire rotation is, for example, recommended by RMA as follows;

  
  - change the direction of rotation of the rolling tires by moving them diagonally across the car  
- maintain the direction of rotation of the driven tires by moving them front to rear (front wheel drive cars) or rear to front (rear wheel drive cars).
 



 
   

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